
My first thought was: The Republican(*s) [Verb wave] [Noun heads] for Washington. (similar to waving hands for Detroit)
Next: The Republican [Noun wave] [Verb heads] for Washington. (similar to the Republican handshake)
And Finally: The Republican [Noun wave] [Verb heads] for Washington. (see 5.c. below)
***
wave:
v.tr.
1. To cause to move back and forth or up and down, either once or repeatedly: She waved a fan before her face.
2. a. To move or swing as in giving a signal: He waved his hand. Nouns
n.
4. A movement up and down or back and forth: a wave of the hand.
5. c. A rising trend that involves large numbers of individuals: a wave of conservatism.
d. One of a succession of mass movements: the first wave of settlers.
Defintions from thefreedictionary.com
The two pictures of people waving on the page didn't help disambiguate the headline for me.


By backtracking and reading the sentence again the proper interpretation with "old" being a collective noun and "man" being a verb can be reached. In other words, "the boat is manned by the old (people)." 

Parse 2:
Language Log posted more about the evolution of the name "crash blossoms" 
Parse 2:


